1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.util;
24  
25  import java.io.Serializable;
26  
27  /**
28   * <a href="Tuple.java.html"><b><i>View Source</i></b></a>
29   *
30   * @author Alexander Chow
31   */
32  public class Tuple implements Serializable {
33  
34      public Tuple(Object obj0, Object obj1) {
35          _array = new Object[] {obj0, obj1};
36      }
37  
38      public Tuple(Object obj0, Object obj1, Object obj2) {
39          _array = new Object[] {obj0, obj1, obj2};
40      }
41  
42      public Tuple(Object obj0, Object obj1, Object obj2, Object obj3) {
43          _array = new Object[] {obj0, obj1, obj2, obj3};
44      }
45  
46      public Tuple(Object[] array) {
47          _array = array;
48      }
49  
50      public Object getObject(int i) {
51          return _array[i];
52      }
53  
54      public boolean equals(Object obj) {
55          if (!(obj instanceof Tuple)) {
56              return false;
57          }
58  
59          Tuple tuple = (Tuple)obj;
60  
61          if (tuple._array.length != _array.length) {
62              return false;
63          }
64  
65          for (int i = 0; i < _array.length; i++) {
66              if ((tuple._array != null) && (_array[i] != null) &&
67                  (!_array[i].equals(tuple._array[i]))) {
68  
69                  return false;
70              }
71              else if ((tuple._array[i] == null) || (_array[i] == null)) {
72                  return false;
73              }
74          }
75  
76          return true;
77      }
78  
79      public int hashCode() {
80          int hashCode = 0;
81  
82          for (int i = 0; i < _array.length; i++) {
83              hashCode = hashCode ^ _array[i].hashCode();
84          }
85  
86          return hashCode;
87      }
88  
89      private Object[] _array;
90  
91  }